There are 8 cups/ 4 pints or  16 scoops in 2 quarts of ice cream.
Money that is paid for the use of money is called interest. When you keep your money in a bank savings account, the bank credits your account with interest.
Pay what you want. Pay what you want (or PWYW) is a pricing strategy where buyers pay their desired amount for a given commodity, sometimes including zero. In some cases, a minimum (floor) price may be set, and/or a suggested price may be indicated as guidance for the buyer. The buyer can also select an amount higher than the standard price for the commodity.